Bushing extractor and inserter



Sept; 4, 1934. L. B. MILLER 1,972,455

BUSHING EXTRACTOR AND INSERTER Filed Sept. 8. 1933 FT? v i V/Z M V 4 d INVENTOR 7 9 7 Z601ZBJ 1 z'ZZer.

Jzi s" ATTORNEY Patented Sept. 4, 1934 1,972,455.

UNITED STATES PATENT OFFICE 1,972,455 7 BUSHING EXTRACTOR AND INSERTER" Leon B. Miller, Brooklyn, N. Y. Application September 8, 1933, Serial No. 688,570 1 Claim. (01. 29-882) This invention relates generally to devices for more bushing receiving shanks equipped with simultaneously removing and replacing bushings, bushing end abutments, all arranged during and particularly to a combination bushing reoperation in symmetric order. The tool is so demover and inserter specially adaptedfor re-bushsigned that the members may be forced'towards ing of bearings in kingpin brackets for autoone another, after the desired bushings are placed mobiles. against their corresponding abutments. The

One'of the prime objects of this invention is tooperation of the tool is uniform, that is the memprovide a device designed to simultaneously rebers are forced uniformly at the same speed move at least two worn-out or defective bushings, against one another. Through this concerted 10 and by the same operation to insert new bushings movement, the new bushings are first brought in in the places of the old. Contact with their respective old bushings of the Another object of this invention is toprovide a kingpin bearings, and as the movement prodevice of this kind which will be inexpensive as gresses,.the new bushings gradually force out the to its manufacture, simpleas to its construction old bushings into the space between the bearings I 15 and entirely self-contained and so constructed providedinthe kingpin structure, and finally take that it alwaysfremains in alignment over itsjenthe place of the expelled bushings. tire length duringthe operation of replacing bush- Referring now specifically to the figures, nuings, meral '10 denotes the wheel shaft of kingpin I A still further object of this invention istoprostructurell consisting of brackets 12 and 13 in I 20 vide in such a device means whereby the operawhich are provided bearings 14 and 15. Old tion of the tool is facilitated through the embushings 16 and. '17, shown in broken lines in ployment of either a press, a Vise orother suitable Fig. l, are in a partially driven-out position devices, whereby the two ends of the tool may be having been forced out by new bushings: 18 and thrust against one another. 19, shown in full lines. These latter bushings 25 Another. object of this invention is to provide are engaged by abutments 20 and 21 respectively, in combination with the tool, ineansforoperating which abutments are formed as the members are the tool without the employment of outside reduced to inner shank extensions22 and 23. agencies Female member 24 and male member 25 of the A still further object of this invention is to protool are both provided with end heads 26 and 27', I

30 vide in connection with such tool,exchangeable respectively. Adjacent to heads 26 and 27 are bushing abutting meansor collars adapted to be the largest shanks or recessed portions 28 and 29 replaceable for any desired size of bushings. which are seperated from the heads by abutment The foregoing and still further objects of this faces 30 and 31. Forming a continuation of invention will be more fully apparent from the shanks 28 and 29, are reduced portions or shanks 35 following description, in connection with the ac- 32 and 33 which have a lesser diameter than the companying drawing, formingpart of. my dis;- former shanks. Steps 34. and 35 connect secclosure, but by no means intended to limit mo tions 28 and 32 and-29 and 33,and form abutto the actual construction shown, and in which ment faces for bushings.

Fig. 1 illustrates a preferred form of my 0001, As will be seen from the drawing, these 40 partially in section, as it is applied to the kingpin gradually recessed'shankportions are arranged bearings of an automobile. symmetrical to one another at both female and Fig. 2 illustrates a modified form of my invenmale members. The latter has a centrally tion adapted to be operable by means of a thread located guide shaft or pilot 36 extending from and nut. p the smallest reduced portion 23, whereas the 45 Fig. 3 is still another modification of my tool female, member has a central bore 37 in which provided with exchangeable bushing abutments or shaft 3 6 is guided. Each corresponding pair of collars." the reduced portions of the tool members are Fig. 4 illustrates a modified arrangement of my intended for the reception of corresponding sizes tool members operatively mounted with an in.- of bushings. In Fig. 1 there are illustrated three 50 dependentpilot, shaft or bolt, and recessed portions for three sizes of bushings. Be

Fig. 5 represents a still other modification of it understood, however, that any smaller or my tool. greater number of shank portions may be ar- My invention preferably embodies a male and ranged to serve specific purposes. The tool shown a female member, both members being guided in Fig. 1 is adapted to be operated by a press or 55 relative to one another and'each having one or vise, in that the heads of the tool members are 3 engaged by the jaws of such press or vise, and as the latter are operated, the members are drawn towards one another.

The modified form of my invention illustrated in Fig. 2 comprises a male member 38 and a female member 39, both similar in construction to members and 24 of Fig. 1. Each of the tool members are provided with symmetrically grouped, shank or recessed portions, diminishing in sizes from their respective'heads and {1 towards their inner ends. The largest'recessed portions are indicated at 42 and 43, the next smaller shanks are numbered 44- and and the innermost portions 46 and 47. Faces 42' and 43,

44 and 45', 46 and 4'7 serveiasabutments for.

the outer ends of new bushings intended to re: place and force out worn, old bushings from aligned bearings.

The centrally located guide shaft iii of the male member, registers with the centralbore 49 of the female member, and is shown to be threaded at, 50. which threaded portion is'engaged by operating nut. 51, bearing against head 41. This modified form of my device is intended to be operatedwithout the agency of a press or similar device and is, entirely selfcontained. After thedesired pair of new bushings is placed over the corresponding recessed portions of both members, guide shaft 48 of the -male member 38 is slipped through both the old bushings of kingpin bearings, and female member 39 is then brought over the shaft, Now nut 51 is operated until the inner ends of the new. bush.- ings engage the outer ends of the ,old bushings in the bracket. Having made certain that the bushings are in proper alignment, the operation of the. nut continues until the old bushings are' completely forced out'and replaced by the new ones. c a

The arrangement of a series of recessed portions diminishing in sizes inthe direction from the tool member heads inwards is intended for the purpose of; permitting the use of the tool for ariousl s ze bu i ifi ll mak of cars-whe h va i n n i n iamete f the bushings are suificiently great to provide adequate abutting surfaces, as illustrated'in Figures 1 and 2. the event, however, where the diameters .of the bushings differ only slightly, s'ufiiciently wide abutting surfaces have to be provided in a different way, as for instance shown in Fi 3:

' This modified form comprises a short male member 53 and a correspondingly short female member53, both consisting of heads 54 and 55 and recessed po ion 6 a d 3 1 espec i y. t e

latter forming integral part'sjof the heads and serving for the reception of the largest bushing the tool isadapted for. A guide shaft 5 s fixedly secured in reduced portion 56 and is adapted to register with the central bore of female member {5.3. .Qperatively engaged by shaft 58 are concentrically drilled, removable abutrhents or collars 5 9 and 60, consisting of reduced portions'fil and Q2, and annular abutting beads 63 and 6,4 respectively. These beads are of suffieient width to fully engage the end faces of corresponding bush n when t a t ar ac d ov r he e uced. screen BelowcollargbQiandSfl are illustrated similar,

butheavier' eirchangeable collars 65 and 66, in

tended for bushingsoflarger diameters and are designedto take the place. of the smaller collars, when larger bushings are'tobe replaced by the tool. Qhviously, any number and sizesfofreplaceable collars may be provided with each tool, thereby enhancing the latters applicability for any required work. In Figure 3, a smooth guide shaft is illustrated, which may be readily replaced by one provided with a thread, similar to that described in Fig. 2.

It will be noted that in each of the forms shown the tool members are so arranged as to guide one another and to remain in alignment during operation, which is essential for proper replacement of bushings in aligned bearings. In Figures 1 and 2 the guide shafts are shown to form integral parts of the male members. It is obvious, however, that they may be constructed in a way similarito that shown in Fig. 3 where the shaft is threaded into the male member.

Inasmuch as the pilot or shafts and the guide bores are the essential means for guiding and aligning the two members, it is readily conceivableto' employ two hollow members, similar to h fem l emb s sh wn. nd to u d a ali n, themby means o a pil t.- .Such ar angement is indicated in Fig. 4, in which numeral 69 denotes the independent u d il t re istering with the bores of fift and right members 68 and 67. Each of the members may be constructd e t i the anne o fema e membe 24 and 39 (Figure 1 n ,2), or mayials he 19ml of femal m mb .53 (F .3), with whi h latte construct o cha eable colla are t be employed. Such arrangement may be operated e th in a press. orby usi g a hreaded pi similar to that of Fig. 2,

Ref r i ow to Fig. t construc ion is inten f r th re val and i se ti n 01.7 1 ings of one size only. In this illustration it will be obs rved th t the bear n s and bu hing f the kingpin bracket, known in automotive par.- lance as spindle, are not of equal length. Thus bear n '70 is' o hat l ger tha bea in 71. a d l bushings 72 and and n bus in s 74 and '75 orresp nd in len h, to hat o their respective bearings.

The t l its lf c nsists f t o en irely identical hollow members 76 and 77 and a shaft 78 in the form of a bolt passing through the bores 01. both members, which serve as guides and bearing s for the shaft. At one end of the shaft a head .79 is provided, while its other end. is threaded at 80 and is engaged by nut 81.

shanks 82 and 83 are twice as long as their corresponding bushings so that the old, expelled bushings are piloted during their removal, whereby their proper engagement by the new bushings is assured. The heads of the members are provided with bushing engaging seats or faces 84 and 85 and with .chamfered surfaces 86 and 87, the latter adapted to facilitate the deflection of shavings from the newly forced-in bushings. A marking groove 88 at the center of shank 83 constitutes the only easily ascertainable difference between the two mem' bers 76 and 77, since the variationin length between their shanks is very small. This groove is intended to indicate whether or not the correct bushing is slipped over the right shank. When the bushing covers or partially covers the marking groove, after it is brought in contact with seat 85, it is an indication that the wrong tool member was employed. The-operation of thetool is very similar to that explained in conlying principles of my invention may be developed for various purposes, and that changes and improvements may be made in the course of the manufacture of my tool. I, therefore, reserve for myself the right to make such changes or improvements as may become necessary, all within the broad scope of my idea, as set forth in the appended claim.

I claim:

In a device for extracting two old, and simultaneously inserting two new bushings in place of the old ones, a pair of substantially symmetrical bushing engaging members adapted to be simultaneously movable towards one another, common guide means for said members centrally located relative to the latter, and adapted to keep the members in alignment during operation, said members provided with abutments for engaging one end of the new bushings, the free ends of the latter adapted to serve as abutments for the old bushings, the new bushings being intended to serve as extracting means for the old bushings, said members provided with elongated shanks extending from their abutments, these shanks being of sufiicient length and diameters for fully accommodating, internally engaging and guiding both new and old bushings during the entire operation, the shank of one of said members provided with an annular marking groove for determining the correct bushing size intended for each member.

LEON B. MILLER. 

